Without changing career path, no I don't think so.
I'm mostly in web development. I can't think of any skill that would significantly up my salary.
Now learning stuff like AI, or Cyber Security could, but that's a very long process, and basically a change of careers. (I'm not against that, but wouldn't call that "easy")
Now learning stuff like AI, or Cyber Security could, but that's a very long process, and basically a change of careers. (I'm not against that, but wouldn't call that "easy")